"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : GSC功能模块
Case Name   : gs_gsc_table_detail，查看指定库、指定表的缓存信息
Create At   : 2022/04/25
Owner       : @peilinqian
Description :
    1、打开gsc开关;
    2、重启数据库生效;
    3、创建数据库;
    4、创建表并查询;
    5、查询所有库并进行连接;
    6、查询指定表不存在;
    7、查看指定库指定表的缓存信息;
    8、两种参数查询库下所有表缓存;
Expect      :
    1、打开gsc开关; 修改成功
    2、重启数据库生效; 重启成功
    3、创建数据库; 创建成功
    4、创建表并查询; 操作成功
    5、查询所有库并进行连接; 连接成功
    6、查询指定表不存在; 查询结果为空
    7、查看指定库指定表的缓存信息; 查询结果为1个库，1张表缓存信息，缓存表字段信息正确
    8、两种参数查询库下所有表缓存; 查询结果涉及两个库（该库和0库），每个库查询结果大于1,且两种方式查询结果相等
History     :
"""
import os
import time
import unittest

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node


class GscTestCase(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.log.info(f'----{os.path.basename(__file__)}:start----')
        self.log.info("----this is setup----")
        self.db_name = 'db_gsc0043'
        self.tb_name = 'tb_gsc0043'
        self.com = Common()
        self.constant = Constant()
        self.sh = CommonSH('PrimaryDbUser')
        self.pri_dbuser = Node(node='PrimaryDbUser')

        step_txt = '----step0:查看数据库状态是否正常;----'
        self.log.info(step_txt)
        status_result = self.sh.get_db_cluster_status('status')
        self.assertTrue(status_result, '执行失败:' + step_txt)
        step_txt = '----step0:查看enable_global_syscache初始配置值;----'
        self.log.info(step_txt)
        self.init_para1 = self.com.show_param("enable_global_syscache")

    def test_main(self):
        if self.init_para1 == 'off':
            step_txt = '----step1:打开gsc开关; expect:修改成功----'
            self.log.info(step_txt)
            result = self.sh.execute_gsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           f"enable_global_syscache= on")
            self.assertTrue(result, '执行失败:' + step_txt)

            step_txt = '----step2:重启数据库生效; expect:重启成功----'
            self.log.info(step_txt)
            restart = self.sh.restart_db_cluster()
            self.assertTrue(restart, '执行失败:' + step_txt)
            self.is_reset_para = True
        else:
            step_txt = '----gsc开关设置正常，跳过step1、step2----'
            self.log.info(step_txt)
            self.is_reset_para = False

        step_txt = f'----step3:创建数据库; expect:创建成功----'
        self.log.info(step_txt)
        create_db = f'drop database if exists {self.db_name};' \
            f'create database {self.db_name};'
        create_result = self.sh.execut_db_sql(create_db)
        self.log.info(create_result)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS, create_result,
                      '执行失败:' + step_txt)

        step_txt = '----step4:创建表并查询; expect:操作成功----'
        self.log.info(step_txt)
        create_tb_sql = f"create table {self.tb_name} " \
            f"(c_integer integer,c_tinyint tinyint," \
            f"c_smallint smallint,c_binary_integer binary_integer," \
            f"c_bigint bigint,c_numeric numeric(10,4)," \
            f"c_number number(10,4),c_smallserial smallserial);" \
            f"select * from {self.tb_name};"
        create_result = self.sh.execut_db_sql(create_tb_sql,
                                              dbname=f'{self.db_name}')
        self.log.info(create_result)
        self.assertIn(self.constant.TABLE_CREATE_SUCCESS, create_result,
                      '执行失败:' + step_txt)
        self.assertIn('0 rows', create_result, '执行失败:' + step_txt)

        time.sleep(2)

        step_txt = '----step5:查询所有库并进行连接; expect:连接成功----'
        self.log.info(step_txt)
        select_db_sql = "select datname from pg_database where datname " \
                        "not like('template%');"
        select_db_result = self.sh.execut_db_sql(select_db_sql)
        self.log.info(select_db_result)
        db_list = select_db_result.splitlines()[2:-1:1]
        for i in db_list:
            con_result = self.sh.execut_db_sql('select current_database();',
                                               dbname=f'{i}')
            self.log.info(con_result)
            self.assertIn(i, con_result, '执行失败:' + step_txt)

        db_oid_sql = f"select oid from pg_database where " \
            f"datname = '{self.db_name}';"
        db_oid = self.sh.execut_db_sql(db_oid_sql).splitlines()[-2].strip()
        self.log.info("指定数据库oid：" + db_oid)
        tb_oid_sql = f"select oid from pg_class where " \
            f"relname = '{self.tb_name}';"
        tb_oid_result = self.sh.execut_db_sql(tb_oid_sql,
                                              dbname=f'{self.db_name}')
        tb_oid = tb_oid_result.splitlines()[-2].strip()
        self.log.info("指定表oid：" + tb_oid)

        step_txt = '----step6:查询指定表不存在; expect:查询结果为空----'
        self.log.info(step_txt)
        check_result6 = self.check_db_gsc(db_oid, '123123', True)
        self.assertIn("0 rows", check_result6, '执行失败:' + step_txt)

        step_txt = '----step7:查看指定库指定表的缓存信息; expect:查询结果为1个库，' \
                   '1张表缓存信息，缓存表字段信息正确----'
        self.log.info(step_txt)
        check_result7 = self.check_db_gsc(db_oid, tb_oid, True)
        self.assertIn('1 row', check_result7, '执行失败:' + step_txt)
        column_info = "'c_integer','c_tinyint','c_smallint'," \
                      "'c_binary_integer','c_bigint'," \
                      "'c_numeric','c_number','c_smallserial'"
        self.assertIn(column_info, check_result7, '执行失败:' + step_txt)

        step_txt = '----step8:两种参数查询库下所有表缓存; expect:查询结果涉及两个库（该库和0库），' \
                   '每个库查询结果大于1,且两种方式查询结果相等----'
        self.log.info(step_txt)
        check_result8_1 = self.check_db_gsc(db_oid, "null")
        check_result8_2 = self.check_db_gsc(db_oid, "-1")
        self.assertEqual(len(check_result8_1[0]), 2, '执行失败:' + step_txt)
        for i in check_result8_1[0]:
            self.assertGreater(check_result8_1[1][i], 1, '执行失败:' + step_txt)
        self.assertTrue(check_result8_1 == check_result8_2,
                        '执行失败:' + step_txt)

    def check_db_gsc(self, db_oid, tb_oid, is_detail=False):
        """
        :param: db_oid: 查询数据库oid
        :return: 返回数据库与对应查询结果字典
        """
        if is_detail:
            check_sql = f"select * from gs_gsc_table_detail" \
                f"({db_oid},{tb_oid});"
            select_result = self.sh.execut_db_sql(check_sql)
            self.log.info(select_result)
            return select_result
        else:
            check_sql = f"select database_oid,count(*) from " \
                f"gs_gsc_table_detail({db_oid},{tb_oid}) " \
                f"group by database_oid order by database_oid;"
            select_result = self.sh.execut_db_sql(check_sql)
            self.log.info(select_result)
            result = select_result.splitlines()[2:-1]
            db_list = []
            db_dict = dict()
            for i in result:
                key_name = i.split('|')[0].strip()
                key_value = int(i.split('|')[1].strip())
                db_dict[key_name] = key_value
                db_list.append(key_name)
            self.log.info(db_list)
            self.log.info(db_dict)
            return db_list, db_dict

    def tearDown(self):
        step_txt = '----this is teardown----'
        self.log.info(step_txt)
        step1_txt = '----清理数据库; expect:清理成功----'
        self.log.info(step1_txt)
        drop_cmd = f"drop database if exists {self.db_name};"
        drop_result = self.sh.execut_db_sql(drop_cmd)
        self.log.info(drop_result)

        if self.is_reset_para:
            self.step2_txt = '----恢复参数为初始值并查询; expect:设置成功----'
            self.log.info(self.step2_txt)
            self.msg1 = self.sh.execute_gsguc('set',
                                              self.constant.GSGUC_SUCCESS_MSG,
                                              f"enable_global_syscache "
                                              f"={self.init_para1}")

            self.step3_txt = '----重启数据库生效; expect:重启成功----'
            self.log.info(self.step3_txt)
            self.restart = self.sh.restart_db_cluster()
            self.step4_txt = '----查询数据库状态; expect:状态正常----'
            self.log.info(self.step4_txt)
            self.status_result = self.sh.get_db_cluster_status('status')

        self.log.info(f'----{os.path.basename(__file__)}:end----')
        self.assertIn(self.constant.DROP_DATABASE_SUCCESS, drop_result,
                      "执行失败" + step_txt + step1_txt)
        if self.is_reset_para:
            self.assertTrue(self.msg1, '执行失败:' + self.step2_txt)
            self.assertTrue(self.restart, '执行失败:' + self.step3_txt)
            self.assertTrue(self.status_result, '执行失败:' + self.step4_txt)
